Odometer



Sept. 1a, 1923. v 1,684,928

R. M. SIMPSON, JR

ODOMETER Filed June 15. 1927 W LALI-VVENTOR.

7 1/ fAo-u, BY I a4 5 W f WM ATTORNEYS.

Patented Sept. 18,1928.

UNITED STATES PATENT OFFICE.

ROBERT M. SIMPSON, Ill, OF CHICAGO, ILLINOIS.

ODOMETEB.

. Application filed. June 15,

. tions of a churn or butter working machine,

has brought forth a .few devicesapplicable to, machines of thischaracter, but the eficct of briny water and constant operation in humidatmosphere has resulted in failure of such devices to function for asubstantial length of time. i V i r The object, therefore, of my deviceis to provide an odometer to register the number of revolutions of abutter working machine which will be so constructed as tobe positive inits operation, resistant to brine, and easy of control.

In the drawings:

Fig. 1 is a view of the end of a drum type churn-with my odometersecured thereto.

Fig. 2 is a side elevation of the end of the churn equiped with mydevice. I

Fig. 3 is a front view of my odometer with a face and dial removed toshow the internal mechanism.

Fig. 4 is a section on line 4-4 of Fig. 3.

Like parts are designated by the same reference characters throughoutthe several views.

\Vithout exception in the present style of design in churn and butterworking machine art, the drum type machines provlde enough space betweenthe drum 1 and A frame 2 to permit of the mounting of my devlce on thehead 3 of the drum without danger of my device striking the A frame inthe revolutions of the drum about its axis 4.

I have, therefore, formed my device as shown at 5 in Figs. 1 and 2 insuch manner as to restrict the thickness of the entire instrument sothat it may be adapted to any of the present types of revolving butterworking machines now on the market.

Externally my'odometer comprises a case 5 which maybe formed as bestshown in Fig. 4 or which may be, if preferred, formed in a plain drumshaped body provided with a dial 10 and a manual setting stem 11 asshown in Fig. 4. The device is mounted eccentrically upon the head ofthe butter working machine and will obtain the motive force foroperating the internal mechanism of my odometer in the mannerhereinafter set forth by reason ofthis eccentric mount ing.

"oncentric with the dial l0 and extending 1927. Serial No. 1%,911.

rearwardly and therefore horizontall withinthe case 5, I provide anindicator s iaft 12 upon which, at its'outer or forward end, isniounted'an indicator 18 and upon which, at its inner end, is mountedthe eccentric this indicator shaft 12 provides the motivating force forthe operation of my device. At an intermediate point upon this shaft andsecured tightly thereto by key or setscrew isa gear wheel 15 rotation ofwhich causes the indicator hand 13 to point outthe number of turns whichthe butter working machine has made. I

A. cam groove 16 substantially circular, and eccentric to the shaft 12is cut in the weight 14 as indicated in Figs. 3 and 4 and is provided asa guide for the cam follower 17 whicluin following its path in the camgroove 16, imparts motion to theoscillator shaft 18. Mounted on theoscillatory sha t 18 is a pawl 19 which engages a ratchet 20, mounted onshaft 11. Shaft 11 carries a pinion 21 meshed with the gear 15 and theresulting mechanical connection enables the weight 14- to rotate theindicator 13 as follows.

As the churn or other butter working machine rotates about its axis 4the weight 14 freely mounted upon the shaft 12 rotates upon the axis ofsaid shaft 12 and causes the cam follower 17 to trace its path in thecam groove 16 thereby oscillating the shaft or arm 18 and causing thepawl to successivelyv engage the ratchet 20 so as to intermittentlyrotate the intermediate shaft 11 upon which the pinion 21 is mounted.Rotation of this pinion will obviously cause rotation of the gear 15 andthe shaft 12 and cause the indicator 13 to point out upon the dial thenumber of revolutions which the butter working machine has made.

At 25 and 26 it will be noted that the shafts 12 and llrespectively passthrough the casing 5. At these points 25 and 26, therefore, I haveprovided packing to prevent leakage of lubricant from casing 5 and topreventaccess of brine to the mechanism. Likewiseat 27 I have providedpacking for the same purpose about a stop lever 28 which weight 14,rotation of which freely about is provided in the following manner andfor an indicator is not required, as for; instance,

when actual churning rather than working of butter is being accomplishedin the churn, the stop lever 28 may be thrust inward so as to cause thecatch 29 to engage the notch 30 in the weight 14, thus effectivelystopping the entire operation of the mechanism in my device until suchtime as indication of number of revolutions is desired.

Provision of the packing at 25, 26 and 27 enables me to providelubrication within the casein large quantities so that the mechanism inmy device is substantially running in oil.

I claim:

1. An odometer comprising an indicator shaft, a rotatable weight, aneccentric mounting for said weight, a cam track in the weight, a camfollower for said cam track, a cam follower arm, a pawl on said arm, apinion and shaft provided with a ratchet for said pawl, and a main shaftand indicator provided with a gear intercorr nected with the pinion.

2. An odometer comprising a case and a calibrated dial on the case, anindicator shaft extending rearwardly from the dial and provided with agear within the case, an indicator on the forward end of the shaft, aweight mounted eccentrically for free rotation on the rearward end ofthe shaft, and within the case, a cam groove in said weight eccentric tothe shaft, an intermediate shaft within the case, an oscillatory armprovided with a pawl and mounted for free rotation on the intermediateshaft, a cam follower in said groove and secured to the oscillatory arm,a ratchet wheel mounted on the intermediate shaft in operative relationto said pawl, a pinion on the intermediate shaft and meshed with thegear on the indicator shaft.

8. A case comprising two compartments separated by a partition providedwith a central slot, a central shaft extending through the firstcompartment and into the second compartment adjacent the slot, a weightprovided with a cam track and loosely mounted on the central shaft inthe second compartment, a counter-shaft and ratchet mounted for rotationin the first compartment and an oscillator and a pawl provided with acam follower to interact through the slot with the cam track in theweight and a mated gear and a pinion upon the central shaft andcounter-shaft respectively.

ROBERT M. SIMPSON, JR.

